For your BMW R series a very vintage style battery box. This battery box is constructed from AISI 316 stainless steel and is ready to install. The battery box has been developed for tuning bike, but to use the OEM battery. Quick and easy to mount does not require any frame modification. Complete with everything needed for installation and complete with instructions. Following Kompo-Tech tradition, all the modifications are reversible. N.B. : for all BMW R from 73-85.